Hi Folks. This is getting WAY to complicated. The locking cap sits a little higher than the OEM cap. It has knurled edges to help grip. I installed it on our Speedmaster and took some pics for everyone.
The locking mechanism is similar to what Yamaha has used for the last decade or more. The main difference is that Triumph uses a screw-on cap, and Yamaha uses a pop off cap (two latches that retract). I have never experienced seizing of the lock or freezing. I don't ride when it's freezing out anyway
I DO lube all my lock cylinders on a regular basis with Tri-Flow. Seizing and freezing is a non-issue here if maintained properly. Many motorcycles have their ignition locks on the top as well, and they work fine.
While this lock is not as easy to install/remove as it's a smooth and round surface without a tab to grab, it is not difficult to operate at all. I tighten to the first click, lock it, rotate to line up the logo, and cover the keyhole. To remove, unlock, close the clover, and press down a little bit with my palm while turning. It's not that difficult to do. The cap sits a little higher than the stock one and the knurled edges are exposed. It's definitely a compromise, but also very workable if you want a locking filler cap.
EDIT: My wife with much smaller hands than me, can open the cap by pressing her fingers on one hand down around the edges and then using her fingers from the other hand to turn the cap. Yeah, it's awkward, but not difficult to do.
The locking cap is on the right.
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I also see that the vents look the same between the original and the locking cap, so I guess I answered my own question on that issue.
Hope this helps,
H.
